Hi Guys,
I going thru this solution where it is meant to capitalize first letter of each word in given set of arrays.
But I unable to understand how this made to recursively call for third time. For example if we give an array of length three, then it should be able to recurse only twice because of the third time we not going over iteratively.
Step 1: array will not length of 1 and hence we go first call capitalizeFirst which will take the first element and return the res
Step 2: We take the second element and transform it to string and push it and that’s it we returning !!!
I;m not sure how it goes to next value or in our case last value of the array 
Please help me understand thi 
function capitalizeFirst (array) {
debugger
if (array.length === 1) {
return [array[0][0].toUpperCase() + array[0].substr(1)];
}
const res = capitalizeFirst(array.slice(0, -1));
const string = array.slice(array.length - 1)[0][0].toUpperCase() + array.slice(array.length-1)[0].substr(1);
res.push(string);
return res;
}
